核电厂应急负压系统风阀的抗震分析
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摘要
风阀是用以调节通风系统中气体流量和压力的常用设备,在核电厂中得到广泛使用。为确保核电机组结构安全,采用有限元方法(FEM)对核电厂应急负压系统中的风阀进行分析,在计算风阀结构固有频率的基础上,得到了风阀结构在地震作用下的应力及变形。分析结果表明,风阀的应力和变形均满足相关抗震规范的要求,风阀结构在地震作用下是安全可靠的。
Air valves are common devices in nuclear power plants to control air flux and pressure. To ensure the structural safety, the air valve of the emergency negative pressure system of the nuclear power plant is analyzed by finite element method(FEM). Based on the calculation of the inherent frequency of the air valve structure, the stress and the deformation of the air valve structure under earthquake are obtained. The analysis results show that the stress and the deformation satisfy the requirements of relative seismic codes, indicating that the air valve structure is safe and reliable under earthquake.
Air valves are common devices in nuclear power plants to control air flux and pressure. To ensure the structural safety, the air valve of the emergency negative pressure system of the nuclear power plant is analyzed by finite element method(FEM). Based on the calculation of the inherent frequency of the air valve structure, the stress and the deformation of the air valve structure under earthquake are obtained. The analysis results show that the stress and the deformation satisfy the requirements of relative seismic codes, indicating that the air valve structure is safe and reliable under earthquake.
引文
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[2]黄文慧,陈学德. 18-5临界装置厂房楼层响应谱计算研究[J].核技术, 2013, 36(4):46-49.
[3]钱浩,徐定耿,杨仁安,等.蒸汽发生器地震反应分析及参数敏感性研究[J].核技术,2013, 36(4):14-19.
[4]张丼,施卫东,项伟,等. CAP1400余排泵地震可运行性及压力边界完整性分析[J].化工设备与管道,2018, 55(5):43-48.
[5]高淑英.振动力学[M].北京:中国铁道出版社,2011:62-64.
[6]康国政.大型有限元程序的原理、结构与使用[M].成都:西南交通大学出版社,2008:1-2.